Package com.twelvemonkeys.servlet.image

Class SourceRenderFilter

java.lang.Object

com.twelvemonkeys.servlet.GenericFilter

com.twelvemonkeys.servlet.image.ImageFilter

com.twelvemonkeys.servlet.image.SourceRenderFilter

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Filter, javax.servlet.FilterConfig

public class SourceRenderFilter
extends ImageFilter

A Filter that extracts request parameters, and sets the corresponding request attributes from ImageServletResponse. Only affects how the image is decoded, and must be applied before any other image filters in the chain.

Version:

$Id: SourceRenderFilter.java#1 $

Author:

Harald Kuhr

See Also:

ImageServletResponse.ATTRIB_SIZE, ImageServletResponse.ATTRIB_AOI, Serialized Form

Field Summary

Fields inherited from class com.twelvemonkeys.servlet.image.ImageFilter

triggerParams

Fields inherited from class com.twelvemonkeys.servlet.GenericFilter

oncePerRequest

Constructor Summary

Constructors

Constructor	Description
SourceRenderFilter()

Method Summary

Modifier and Type	Method	Description
protected java.awt.image.RenderedImage	doFilter(java.awt.image.BufferedImage pImage, javax.servlet.ServletRequest pRequest, ImageServletResponse pResponse)	This implementation does no filtering, and simply returns the image passed in.
protected void	doFilterImpl(javax.servlet.ServletRequest pRequest, javax.servlet.ServletResponse pResponse, javax.servlet.FilterChain pChain)	Extracts request parameters, and sets the corresponding request attributes if specified.
void	init()	A convenience method which can be overridden so that there's no need to call super.init(config).
void	setRegionHeightParam(java.lang.String pRegionHeightParam)
void	setRegionLeftParam(java.lang.String pRegionLeftParam)
void	setRegionPercentParam(java.lang.String pRegionPercentParam)
void	setRegionTopParam(java.lang.String pRegionTopParam)
void	setRegionUniformParam(java.lang.String pRegionUniformParam)
void	setRegionWidthParam(java.lang.String pRegionWidthParam)
void	setSizeHeightParam(java.lang.String pSizeHeightParam)
void	setSizePercentParam(java.lang.String pSizePercentParam)
void	setSizeUniformParam(java.lang.String pSizeUniformParam)
void	setSizeWidthParam(java.lang.String pSizeWidthParam)

Methods inherited from class com.twelvemonkeys.servlet.image.ImageFilter

setTriggerParams, trigger

Methods inherited from class com.twelvemonkeys.servlet.GenericFilter

destroy, doFilter, getFilterConfig, getFilterName, getInitParameter, getInitParameterNames, getServletContext, init, log, log, setFilterConfig, setOncePerRequest

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SourceRenderFilter

public SourceRenderFilter()

Method Detail

setRegionHeightParam

public void setRegionHeightParam(java.lang.String pRegionHeightParam)

setRegionWidthParam

public void setRegionWidthParam(java.lang.String pRegionWidthParam)

setRegionLeftParam

public void setRegionLeftParam(java.lang.String pRegionLeftParam)

setRegionTopParam

public void setRegionTopParam(java.lang.String pRegionTopParam)

setSizeHeightParam

public void setSizeHeightParam(java.lang.String pSizeHeightParam)

setSizeWidthParam

public void setSizeWidthParam(java.lang.String pSizeWidthParam)

setRegionPercentParam

public void setRegionPercentParam(java.lang.String pRegionPercentParam)

setRegionUniformParam

public void setRegionUniformParam(java.lang.String pRegionUniformParam)

setSizePercentParam

public void setSizePercentParam(java.lang.String pSizePercentParam)

setSizeUniformParam

public void setSizeUniformParam(java.lang.String pSizeUniformParam)

init

public void init()
          throws javax.servlet.ServletException

Description copied from class: GenericFilter

A convenience method which can be overridden so that there's no need to call super.init(config).

Overrides:

init in class GenericFilter

Throws:

javax.servlet.ServletException - if an error occurs during init

See Also:

GenericFilter.init(FilterConfig)

doFilterImpl

protected void doFilterImpl(javax.servlet.ServletRequest pRequest,
                            javax.servlet.ServletResponse pResponse,
                            javax.servlet.FilterChain pChain)
                     throws java.io.IOException,
                            javax.servlet.ServletException

Extracts request parameters, and sets the corresponding request attributes if specified.

Overrides:

doFilterImpl in class ImageFilter

Parameters:

pRequest -

pResponse -

pChain -

Throws:

java.io.IOException

javax.servlet.ServletException

See Also:

GenericFilter.oncePerRequest, doFilter, Filter.doFilter

doFilter

protected java.awt.image.RenderedImage doFilter(java.awt.image.BufferedImage pImage,
                                                javax.servlet.ServletRequest pRequest,
                                                ImageServletResponse pResponse)

This implementation does no filtering, and simply returns the image passed in.

Specified by:

doFilter in class ImageFilter

Parameters:

pImage -

pRequest -

pResponse -

Returns:

pImage